Check Engine Light Due to Gas Cap Issue on Chevrolet Silverado 3500

Illumination of the Check Engine Light can be caused by a loose or worn gas cap.

RepairPal Verified
Average mileage: 7,700 (5,400–10,000)
Exhaust & Emissions affected: Gasoline
7 model years affected: 2001, 2002, 2003, 2004, more2005, 2006, 2007
9 people reported this problem
2 people shared problem details
Was told by Chevy dealer my gas cap set off engine lite.
tighten gass cap after fueling
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